otometrics Madsen ZODIAC 901, Руководство пользователя

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In such cases it is better to use Measurement Setup to increase the Min.
Pressure and/or reduce the Max. Pressure. Alternatively, change the air
pressure manually (§4.1.1).
L/R Shift When starting to test the patient’s other ear, remember to register the
change-over on the ZODIAC 901, otherwise the data for the first ear will
be overwritten. To change to the other ear, press
Alt. Select and then
Softkey 4 .
Ext. Range Note that the pressure range of –400 to +200 daPa (the factory default)
may be expanded to –600 to +400 daPa by pressing
Ext. Range.
Softkey 1 Users who find it more informative to perform tympanometry using
analog meters instead of the graphic display of a tympanogram can
press
Softkey 1 , and a screen similar to the one shown in Fig.4.7 below
will appear.
Softkey 1 Note that pressing Softkey 1 again after completion of the tymp. meas-
urement will return you to the graphic display and show you the tym-
panogram you have just made using the analog meters.
Alt. Select The Alt. Select pushkey allows you to use the Smooth feature to opti-
mize the curves (see Fig.4.10 below and refer to §4.1.35.1.2 for further de-
tails re this function). Just press
Softkey 2 from the Alt. Select sub-menu.
Setup Parameters Setup parameters available in Auto Tymp. Mode (see also §5.2.1) are:
Pump Speed: 50 daPa/S (decaPascals per sec), 100 daPa/S, 200
daPa/S, 400 daP/S, AFAP (AS FAST AS POSSIBLE)
Y-axis Scaling (Compliance): Auto, 0.3 ml, 0.6 ml, 0.9 ml, 1.5 ml,
3.0 ml, 4.5 ml.
Min. Pressure (daPa): –100, –150, –200, –250, –300, –350, –400,
–450, –500, –550, –600.
Max. Pressure (daPa): 100, 150, 200, 250, 300, 350, 400.
Measuring Direction: positive, or negative.
Leak Detect: On/Off.
Operation Manual 35
GN Otometrics MANUAL MODE Chap. 4
ZODIAC 901 Middle-Ear Analyzer
TYMPANOMETRY
4.1
Fig.4.7
Tymp. Sweep analog meter
display